ARS PESTICIDE PROPERTIES last update May 1995


name:PHOSPHAMIDON                              CASRN: 13171-21-6

molecular formula: C10H19CLNO5P
molecular weight : 299.69
physical state   : L
(L=liquid; G=gas; S=solid)
reference: 9ACHB2,2ND ED.,1987

_________________________________________________________________________
Key to sources: (M)Manufacturer, (R)eview, (H)andbook, (E)xperiment,
                (C)alculated, (U)nknown, (P)EPA data, (W)auchope

* denotes a selected value where multiple values of a property are listed.
_________________________________________________________________________

-value-            -medium-   -temp-  -pH-   -source-    -reference-


Boiling point(deg C):
94     -           0.04mmHg                      H    9PMED8

Melting point(deg C):
       -

Decomposition point(deg C):
       -

Heat of vaporization(deg C):

--RATE CONSTANTS--

Hydrolysis (per day):
0.01150*                         20     5        M     9CIBAG
0.0128*                          20     7        M     9CIBAG
0.0578*                          20     9        M     9CIBAG

Photolysis (per day):
0.05600*             WATER       25              M     9CIBAG
STABLE*              SOIL        5.5

Vapor pressure (mPa):
3.1                              20              R     9HRLCP
2.2                              25              R     9HRLCP
2.93*                            20              M     9CIBAG
3.3                              20              H     9ACHB2,2ND ED.,1987


Water solubility (ppm):       -temp-         -source- -reference-
1E+06*                                           W     
MISCIBLE                         22              M     9CIBAG

Organic solubility (ppm):
3.2E+4*   HEXANE                 25              H    9ACHB2,2ND ED.,1987
MISCIBLE* ACETONE,CL2 METHANE    20              H    9PMED8
MISCIBLE* OCTAN-1-OL,TOLUENE     20              H    9PMED8

Henrys law (Pa m3/mol):
8.8E-07*                         25              M    9CIBAG

Octanol/water partitioning (log Kow):
1.34                                             E    ESTHAG, 22(3):272,1988
0.795*                           25              M    9CIBAG

Acid dissociation (pKa):

Soil sorption:
soiltype        temp.   Kd      Koc      %om   pH     reference
CLAY                    3.259   117      4.8   5.9    9CIBAG
SAND                    0.057   10.9     0.9   6.5    9CIBAG
LOAM                    0.488   71       1.2   7.6    9CIBAG
LOAMY SAND              0.199   69       0.5   6.5    9CIBAG
LOAMY SAND              0.034   4.24     1.38  7.4    9CIBAG
SAND                    0.057   9.52     1.03  6.5    9CIBAG
SILT LOAM               0.078   5.18     2.59  6.2    9CIBAG
SILT LOAM               0.39    7.21     9.31  7.3    9CIBAG
SILT                    1.36    5.43     43.1  6.9    9CIBAG
                                33*

Field Dissipation halflife(days):
value             test area        pH        source   reference
3-30                                            P     8EPAGR
8                                               M     9CIBAG
30                                              M     9CIBAG
18(3-30)*

Halflife in soil:
Soiltype           aerobic      anaerobic    source   reference
LOAMY SAND         9.2*                         M     9CIBAG

                        


Comments:
AEROBIC VALUE 9.2 AT Ph7
AEROBIC 9.2=PH6.9 NO LONGER SOLD BY CIBA